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mailbox: tegra-hsp: Set lockdep class dynamically 

On Tegra194, due to both BPMP and TCU using mailboxes, we get a
lockdep spew at boot. Both are using different instances of HSP,
so this is harmless. As such give each HSP instance a different
lockdep class.

Signed-off-by: Mikko Perttunen <mperttunen@nvidia.com>
Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
This commit is contained in:
Mikko Perttunen 2021-02-10 15:49:45 +02:00 committed by Jassi Brar
parent 4450f128c5
commit d1e6bc0ca0
1 changed files with 15 additions and 0 deletions
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15
drivers/mailbox/tegra-hsp.c
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@ -98,7 +98,9 @@ struct tegra_hsp {
unsigned int num_ss;
unsigned int num_db;
unsigned int num_si;
spinlock_t lock;
struct lock_class_key lock_key;
struct list_head doorbells;
struct tegra_hsp_mailbox *mailboxes;
@ -775,6 +777,18 @@ static int tegra_hsp_probe(struct platform_device *pdev)
return err;
}
lockdep_register_key(&hsp->lock_key);
lockdep_set_class(&hsp->lock, &hsp->lock_key);
return 0;
}
static int tegra_hsp_remove(struct platform_device *pdev)
{
struct tegra_hsp *hsp = platform_get_drvdata(pdev);
lockdep_unregister_key(&hsp->lock_key);
return 0;
}
@ -834,6 +848,7 @@ static struct platform_driver tegra_hsp_driver = {
.pm = &tegra_hsp_pm_ops,
},
.probe = tegra_hsp_probe,
.remove = tegra_hsp_remove,
};
static int __init tegra_hsp_init(void)